Heat dissipation device



FIG. 1 is a perspective view of a heat dissipation device showing ournew design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left view thereof;

FIG. 5 is a right view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a top perspective view thereof shown in a use configurationwith environment.

The broken lines in the drawings depict portions of the heat dissipationdevice that form no part of claimed design. The broken lines in FIG. 8depicting a heat radiator as environment form no part of the claimeddesign.

CLAIM The ornamental design for a heat dissipation device, as shown anddescribed.